I was inspired to build a .20 cal Sheridan carbine after seeing a Benjamin 397C. The rifle at top is the standard Blue Streak shown with the carbine for comparison. The carbine can be pumped up to ten times for a muzzle velocity of 600fps. Easy to pump and fun to shoot with that inherent Sheridan accuracy. I have built three of these; two Blue and the Silver pictured below with a 397C.